La1.3CaMg0.7Ni9储氢合金

被引:6
作者
唐睿
张朝晖
刘丽琴
朱杰武
柳永宁
机构
[1] 西安交通大学金属材料强度国家重点实验室
[2] 西安交通大学金属材料强度国家重点实验室 西安
[3] 西安
关键词
储氢合金; PCT曲线; 放电容量; 循环稳定性;
D O I
10.19476/j.ysxb.1004.0609.2004.01.011
中图分类号
TG139.7 [];
学科分类号
080502 ;
摘要
采用XRD分析了La1.3CaMg0.7Ni9储氢合金的晶体结构,并研究了合金的气相储氢特性以及电化学性能。结果表明,合金由具有PuNi3结构的LaNi3主相和LaNi5、LaNi2.28第二相构成;在1.6MPa氢压和300K下,合金的储氢量达到1.68%(质量分数),比纯LaNi5的储氢量提高了20%;合金的活化性能良好,经3个充放电循环即可完全活化,其放电容量达到395mA·h/g,比AB5型储氢合金的容量提高了23%,经100次循环后容量保持率为80%。
引用
收藏
页码:51 / 54
页数:4
相关论文
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